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OS-M (Chongqing SQX)

OS-M1 (Lingque 1B) [OneSpace]

OS-M4 [OneSpace]

OS-M or Chongqing SQX is a small solid fuel orbital rocket designed by the Chinese company OneSpace.

The OS-M1 version consists of a three stage core. The OS-M2 version is augmented by two and the OS-M4 version by four strap-on motors.

Reportedly the OS-M rockets use demilitarized solid rocket motors from retired missiles. Stage one has a fixed nozzle with steerable thrust vanes and fins. Stage two, which is identical to stage one, uses also thrust vanes and fins and stage three, identical to the OS-X prototype (?), uses only thrust vanes.

Possibly an additional post boost stage for trim maneuvers and apogee rising is also included.

The maiden flight of an OS-M1 on 27 March 2019 failed to reach orbit due to a gyroscope failure after 45 seconds of flight.

Version Stage 1 Stage 2 Stage 3 Stage 4
OS-M1 (Chongqing SQX-1) ? ? ? ?
OS-M2 (Chongqing SQX-2) 2 × ? ? ? ?
OS-M4 (Chongqing SQX-4) 4 × ? ? ? ?
Performance (kg) LEO LPEO SSO GTO GEO MolO IP
OS-M1 205 73 - - - -
OS-M2 390 204 - - - -
OS-M4 553 307 - - - -
No:         Type               Date          LS         Payload

 1      1   OS-M1              27.03.2019  F Jq SLS-E2  Lingque 1B
 

Planned:

 
Launch sites:

Alx = Alxa Left Banner Airport, Inner Mongolia, China ChinaJq  = Jiuquan Space Center, Inner Mongolia, China China